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Сегодня каждый, кто собирается в отпуск и не знает, с кем оставить своего котика или кошку, может во[...]
The Bateman equations
In general, the evolution of the nuclear fuel is followed by solving the Bateman equations, which read
dn (t) dt
where ni is the number of nuclei of type i per unit volume, Ai j is the decay constant of nucleus i to nucleus j, acj is the capture cross-section of nucleus i giving nucleus j, ctt, the total cross-section of nucleus i, is the sum of the capture and fission cross-sections, ‘ is the neutron flux. These equations are summarized in the vector-matrix form.
dn
dt